Which singles don't go together?

I was thinking about alan's singles and some of them are really cohesive like "Megumi no Ame" and "Namida" or "Swear" and "Beauty". They just really match each other!

So which singles do you think don't really go together?

I think 'sign' doesn't belong on Hitotsu. The other songs are just so average and then you get this really amazing ethnic song lol'Koko ni Iru' is also kind of weird on Kaze ni Mukau Hana. It feels like it should be on Swear with the other more pop songs